The pencil “lead” is actually a mixture of graphite and clay. More clay in the mixture makes the lead harder. A harder lead has a higher number. Pencils are numbered from 1-3 but most people use a ...

35PCS Upgraded Version Artist Set：Come with 6 PCS drafting pencils and 20 tubes of lead refill in 0.5 mm & 0.7mm & 0.9mm & 2.0 mm, 3 pcs 4B erasers, 1 pcs kneaded eraser, 18 pcs cap eraser ...

When choosing the best drawing pencils, there are several factors to consider. The first is the grade of the pencil, which determines the hardness or softness of the lead. The second is the type ...